Mounting frame for rock breakers and rock implements

ABSTRACT

A mobile mounting frame for rock working tools having universally movable tool positioning and operatively supporting means.

United States Patent McIntosh et al.

[54] MOUNTING FRAME FOR ROCK BREAKERS AND ROCK IMPLEMENTS [72]Inventors: Ian Arthur McIntosh; Norman John Bowers; Brian AlfredBowers;Bruoe Robert Miles, all of Sydney, New

South Wales, Australia [73] Assignee: Air Advantage (Australia) Pty.

Limited, Sydney, Australia [22] Filed: Sept. 22, 1970 [21] Appl. No.:74,318

[30] Foreign Application Priority Data Oct. 2, 1969 Australia ..6l773/69[52] [1.8. CI. ..l73/23, 173/28, 173/43, 299/70 [51] Int. Cl ..E2lc11/02 [58] Field of Search ..173/28, 23, 38, 43; 299/70 151 3,682,253[451 Aug. 8, 1972 I [56] References Cited UNITED STATES PATENTS2,903,949 9/1959 Simmonds .173/43 3,548,604 12/1970 Campbell ..175/43 x2,614,808 10/1952 Curtis et a]. ..173/43 FOREIGN PATENTS OR APPLICATIONS60,551 1954 France ..173/43 Primary Examiner-Emest R. Purser AuomeyEmoryL. Grofl' and Emory L. Groff, Jr.

[ ABSTRACT A mobile mounting frame for rock working tools havinguniversally movable tool positioning and operatively supporting means.

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MOUNTING FRAME FOR ROCK BREAKERS AND ROCK IMPLEMENTS This invention hasbeen devised to provide a mounting frame for rock working tools. Themounting frame can be easily transported to a work area and an implementmounted thereon can be moved radially and/or vertically and/or angularlyand accurately located and operatively secured in a selected workposition.

The mounting frame for rock working tools according to the inventioncomprises a base, a turntable partrotatably mounted on the base andmeans whereby the turntable can be turned to and held in a selectedposition, a primary arm slidably mounted on the turntable and meanswhereby said primary arm can be moved and held on the turntable in aselected position, a secondary arm slidably and rotatably mounted in ahead on one end of the primary arm and means whereby said secondary armcan be moved and held in the head in a selected position, a yoke mountedon one end of the secondary arm, a carrier for an implement cradleswingably mounted in the yoke and means to swing the carrier and hold itin a selected position and actuating and control mechanism for theseveral means.

One embodiment is described with reference to the drawings wherein FIG.1 is a perspective view of the frame with a tool mounted thereon andillustrating a mobile table housing the controls for the variousmovements of the frame components.

FIG. 2 is a side elevation with part of the secondary arm omitted.

FIGS. 3 is a fragmentary plan showing the turntable and part of theprimary arm.

FIG. 4 is sectional end elevation showing the turntable king pin.

FIG. 5 is a fragmentary perspective side view of a tool mounted in acarrier in the yoke.

FIG. 6 is fragmentary perspective view of the back of the yoke and thetool carrier and FIG. 7 is a schematic illustration of secondary armmoving mechanism Referring to the drawing the base 1 is made from steelchannels formed into a substantially square sub- -frame to which isfixed springs 2 and an axle and wheel assembly 3. Frame stabilizingjacks and stays 4 and towing arms 5 extend from the sub-frame. Thesubframe has comer braces 6 and three radial braces 7 on which ismounted a center bearing assembly 9 to receive the king pin 9a of acircular turntable 10. The turntable 10 has a peripheral channel 11which receives three load supporting rollers 12 mounted on two of thecorner braces 6 and on the back member 13 of the sub-frame.

The turntable l0 rotated by a chain 14 in the channel 11 fixed as at 15to the turntable, the chain passes around jockey pulleys l6 and throughan air motorchain drive unit 17.

A channel housing 18 is fixed to the top of the tumtable 10 over itsaxis of rotation and upper and lower primary arm support rollers 19 aremounted on the housing 18 and on the turntable 10 respectively.

The primary arm 21 is of generally box section and is set upwardlyoutwardly and acutely at one end as at 22. At the upper end of the part22 is a head 23.

The arm 21 is movable longitudinally by means of a chain 24 anchored atits ends to the channel housing 18 as at 25 and 26, and passing aroundchain pulleys 27 and 28 on the arm 21, around jockey pulleys 29-30 andan air motor-chain drive unit 31 mounted on the turntable.

The head 23 comprises a pair of mounting plates 32. A cylindrical case33 has side plates 34 pivotally connected as at 35 to the mountingplates 32. There is a plurality of positioning holes 36 on a commonradius from the pivot connection 35 through the side plates 34. Theholes 36 are selectively alignable with a hole 37 through the mountingplates 32. A bolt 38 is used to position the case 33 relative to the armpart 22.

A rotatable mounting sleeve (see FIGS. 2 and 5) is held in position inthe case 33 by end plates 40. The sleeve is rotated by a chain 41passing around a sprocket 42 fixed to the lower end plate 40, aroundjockey pulleys 43 mounted on the side plates 34 and around an airmotor-chain drive unit 44 mounted between the side plates 34.

The secondary arm 45 is an H section beam having a web 45a and isslidably mounted in correspondingly shaped openings through the endplates 40.

The arm 45 is raised and lowered and held in a selected position by achain 46. The chain 46 is anchored as at 47 to the lower end plate 40,passes around chain pulleys 48, 49 at the lower and upper ends of arm 45around jockey pulleys 50 and an air motor-chain drive unit 51 mounted onthe top plate 40.

A yoke 52 is fixed to the lower end of the arm 45. The yoke 52 has twoarms 53 having bearings 54in the lower ends and working tool carrier 55is mounted by trunnion journals 56in the bearings 54. The carrier isheld in operative position aligned with the legs 53 or set at a selectedangle thereto by two pneumatic cylinderplunger units 57. The units 57are pivotally mounted at their respective ends to brackets 58 on theyoke 52 and offset brackets 59 on the carrier 55. An implement cradle 60is slidably mounted on the carrier 55 and its sliding movement iscontrolled a pneumatic cylinder and plunger unit 61 connected at itsrespective ends to the carrier 55 as at 62 and to the cradle 60 as at63. A tool, in this case a pneumatic rock pick 64 and its actuatingunit, is mounted in the cradle by conventional means.

The various power units are operatively connected to an external sourceof compressed air and/or hydraulic power through a portable battery ofcontrol valves 65 on, in this embodiment, a separate control board 66having legs 67.

Once the frame is positioned and supported by the jacks and stays 4 injuxtaposition to a work site the control panel is positioned so that theoperator can see and control the tool at the workface. The primary armcan be moved longitudinally and the turntable can be rotated byoperation of the units 31 and 17 respectively. The secondary arm can berotated, raised and lowered by operation of the units 44 and 51respectively and the carrier 55 can be set at a required angle for thetool 64 to be positioned against a work face by operation of the units57. The tool is operated in conventional manner through the controlpanel and the unit 61 will hold the tool against the workface. Whenusing a rock pick as illustrated side loads can be applied by units 57.

The claims defining the invention are as follows:

l. A mountingframe for rock working tools, said mounting framecomprising a base, a turntable rotatably mountedon the base, meanswhereby the turntable can be turned to and held in a selected position,a primary arm slidably mounted on the turntable,

said base including means for supporting said turntable, said meanscomprising a plurality of rollers forming a ring track on which saidturntable is mounted, a channel track extending across said turntableover the axis mounted in the yoke, an implement cradle slidably mountedon said cradle means to swing the carrier and hold it in a selectedposition, and actuating and control mechanisms for each of saidaforementioned means.

2. A mounting frame as claimed in claiml wherein the base includes atrailer chassis mounted on wheels,

' jacks supporting the chassis when in operative position and stays tostabilize the chassis.

3. A mounting frame as claimed in claim 1 including means for rotating.the turntable and holding it in a selected position, said meanscomprising an endless 5. A mounting frame as claimed-inclaim 1 whereinthe end part of the primary arm to which the head is fixed is setupwardly outwardly and acutely relative to said arm, said headcomprising a pair of mounting plates, a case including side'platespivotally connected to said mounting plates, said side plates having aplurality of positioning holes on a common radius from said pivotconnection, said head mounting plates having at least one registeringhole therethrough, a mounting sleeve for said secondary arm rotatablymounted in.

the case, upper and lower end plates holding said sleeve insaid case, asprocket on one of said end plates, a motor mounted between said sideplates, and a chain connecting said sprocket to saidmotor. I

6. A mounting frame as claimed in claim ,5 wherein said secondary arm isslidable in said end plates, means chain mounted around the turntableand anchored thereto, a motor mounted on said base, said chain drivinglyconnected to said motor.

4. A mounting frame as claimed in claiml including means for moving theprimary arm and securing it in a selected position, said meanscomprising a chain, a channel housing on the turntable, chain pulleys onsaid arm, a motor mounted on the turntable, said chain anchored at itsends to said channel, passing around e ir for raising and lowering saidarm andholding it in a selected position, said means comprising a chain,a pulley on the bottom of said secondary arm, a motor mounted on theupper sleeve end plate, a pulley at the top of said secondary arm, saidchain anchored at one end to the lower sleeve end plate, passing aroundsaid bottom pulley upwardly to said motor and then over said top pulley.

7. Amounting frame as claimed in claim 1 wherein nals mounted in saidbearings,'two pneumatic cylinderplunger units pivotally connected tosaid yoke and to brackets on the working tool carrier respectively tothereby hold said carrier in a selected operative positlon. 8. Amounting frame as claimed in claim 1 wherein said implement cradle isslidably mounted on the carrier, means controlling said slidingmovement, said control means comprising a pneumatic, cylinder andplunger unit connecting said cradle to'said carrier.

9. A mounting frame as claimed in claim 1 wherein said actuating andcontrol mechanisms are mounted on said chain pulleys and drivinglyconnected to said mo- 40 a mobile comrol membertor.

1. A mounting frame for rock working tools, said mounting framecomprising a base, a turntable rotatably mounted on the base, meanswhereby the turntable can be turned to and held in a selected position,a primary arm slidably mounted on the turntable, said base includingmeans for supporting said turntable, said means comprising a pluralityof rollers forming a ring track on which said turntable is mounted, achannel track extending across said turntable over the axis of itsrotation, a plurality of upper and lower rollers located to support theprimary arm slidably in said channel track, means whereby said primaryarm can be moved and held on the turntable in a Selected position, ahead at one end of said primary arm, a secondary arm slidably androtatably mounted in said head, means whereby said secondary arm can bemoved and held in the head in a selected position, a yoke mounted on oneend of said secondary arm, a carrier swingably mounted in the yoke, animplement cradle slidably mounted on said cradle means to swing thecarrier and hold it in a selected position, and actuating and controlmechanisms for each of said aforementioned means.
 2. A mounting frame asclaimed in claim 1 wherein the base includes a trailer chassis mountedon wheels, jacks supporting the chassis when in operative position andstays to stabilize the chassis.
 3. A mounting frame as claimed in claim1 including means for rotating the turntable and holding it in aselected position, said means comprising an endless chain mounted aroundthe turntable and anchored thereto, a motor mounted on said base, saidchain drivingly connected to said motor.
 4. A mounting frame as claimedin claim 1 including means for moving the primary arm and securing it ina selected position, said means comprising a chain, a channel housing onthe turntable, chain pulleys on said arm, a motor mounted on theturntable, said chain anchored at its ends to said channel, passingaround said chain pulleys and drivingly connected to said motor.
 5. Amounting frame as claimed in claim 1 wherein the end part of the primaryarm to which the head is fixed is set upwardly outwardly and acutelyrelative to said arm, said head comprising a pair of mounting plates, acase including side plates pivotally connected to said mounting plates,said side plates having a plurality of positioning holes on a commonradius from said pivot connection, said head mounting plates having atleast one registering hole therethrough, a mounting sleeve for saidsecondary arm rotatably mounted in the case, upper and lower end platesholding said sleeve in said case, a sprocket on one of said end plates,a motor mounted between said side plates, and a chain connecting saidsprocket to said motor.
 6. A mounting frame as claimed in claim 5wherein said secondary arm is slidable in said end plates, means forraising and lowering said arm and holding it in a selected position,said means comprising a chain, a pulley on the bottom of said secondaryarm, a motor mounted on the upper sleeve end plate, a pulley at the topof said secondary arm, said chain anchored at one end to the lowersleeve end plate, passing around said bottom pulley upwardly to saidmotor and then over said top pulley.
 7. A mounting frame as claimed inclaim 1 wherein said yoke comprises two arms including bearings in theirlower ends and said carrier includes trunion journals mounted in saidbearings, two pneumatic cylinder-plunger units pivotally connected tosaid yoke and to brackets on the working tool carrier respectively tothereby hold said carrier in a selected operative position.
 8. Amounting frame as claimed in claim 1 wherein said implement cradle isslidably mounted on the carrier, means controlling said slidingmovement, said control means comprising a pneumatic cylinder and plungerunit connecting said cradle to said carrier.
 9. A mounting frame asclaimed in claim 1 wherein said actuating and control mechanisms aremounted on a mobile control member.